STM investigation of vapor-deposition polymerization

被引：9

作者：

Alvarado, S. F. ^{[1
]}

Riess, W. ^{[1
]}

Jandke, M. ^{[2
]}

Strohriegl, P. ^{[2
]}

机构：

[1] IBM Res, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland

[2] Univ Bayreuth, D-95440 Bayreuth, Germany

来源：

ORGANIC ELECTRONICS | 2001年 / 2卷 / 02期

关键词：

STM; Vapor-deposition polymerization; Poly(phenylquinoxaline);

D O I：

10.1016/S1566-1199(01)00012-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a study of vapor-deposition polymerization (VDP) to produce thin layers of poly(phenylquinoxaline) (PPQ), a material that can be used as an electron-transport layer in multilayer organic electroluminescent devices. The polymer is prepared by the thermally-induced polycondensation reaction of 1,3-bis(phenylglyoxaloyl)benzene and 3,3'-diaminobenzidine. The two monomers are deposited by evaporation onto an atomically clean Au(111) surface under ultrahigh-vacuum conditions. Polymer formation is monitored in situ by scanning tunneling microscopy. Photoluminscence (PL) spectroscopy measurements, performed in situ, reveal that the PL spectrum of the VDP product corresponds to a reference spectrum for solution-synthesized PPQ. For monolayer coverage, polymer clusters are formed with the chains oriented parallel to each other. STM images suggest that the VDP-prepared films can be much smoother and more uniform than films deposited by spin coating. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：75 / 82

页数：8

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